"""
員工生命週期管理 API
觸發員工到職、離職自動化流程
"""
from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from app.db.session import get_db
from app.models.employee import Employee
from app.services.employee_lifecycle import get_employee_lifecycle_service

router = APIRouter()


@router.post("/employees/{employee_id}/onboard")
async def onboard_employee(
    employee_id: int,
    create_keycloak: bool = True,
    create_email: bool = True,
    create_drive: bool = True,
    db: Session = Depends(get_db),
):
    """
    觸發員工到職流程

    自動執行:
    - 建立 Keycloak SSO 帳號
    - 建立主要郵件帳號
    - 建立雲端硬碟帳號 (Drive Service，非致命)

    參數:
    - create_keycloak: 是否建立 Keycloak 帳號 (預設: True)
    - create_email: 是否建立郵件帳號 (預設: True)
    - create_drive: 是否建立雲端硬碟帳號 (預設: True，Drive Service 未上線時自動跳過)
    """
    employee = db.query(Employee).filter(Employee.id == employee_id).first()

    if not employee:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"員工 ID {employee_id} 不存在"
        )

    if employee.status != "active":
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=f"只能為在職員工執行到職流程 (目前狀態: {employee.status})"
        )

    lifecycle_service = get_employee_lifecycle_service()
    results = await lifecycle_service.onboard_employee(
        db=db,
        employee=employee,
        create_keycloak=create_keycloak,
        create_email=create_email,
        create_drive=create_drive,
    )

    return {
        "message": "員工到職流程已觸發",
        "employee": {
            "id": employee.id,
            "employee_id": employee.employee_id,
            "legal_name": employee.legal_name,
        },
        "results": results,
    }


@router.post("/employees/{employee_id}/offboard")
async def offboard_employee(
    employee_id: int,
    disable_keycloak: bool = True,
    email_handling: str = "forward",  # "forward" 或 "disable"
    disable_drive: bool = True,
    db: Session = Depends(get_db),
):
    """
    觸發員工離職流程

    自動執行:
    - 停用 Keycloak SSO 帳號
    - 處理郵件帳號 (轉發或停用)
    - 停用雲端硬碟帳號 (Drive Service，非致命)

    參數:
    - disable_keycloak: 是否停用 Keycloak 帳號 (預設: True)
    - email_handling: 郵件處理方式 "forward" 或 "disable" (預設: forward)
    - disable_drive: 是否停用雲端硬碟帳號 (預設: True，Drive Service 未上線時自動跳過)
    """
    employee = db.query(Employee).filter(Employee.id == employee_id).first()

    if not employee:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"員工 ID {employee_id} 不存在"
        )

    if email_handling not in ["forward", "disable"]:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="email_handling 必須是 'forward' 或 'disable'"
        )

    lifecycle_service = get_employee_lifecycle_service()
    results = await lifecycle_service.offboard_employee(
        db=db,
        employee=employee,
        disable_keycloak=disable_keycloak,
        handle_email=email_handling,
        disable_drive=disable_drive,
    )

    # 將員工狀態設為離職
    employee.status = "terminated"
    db.commit()

    return {
        "message": "員工離職流程已觸發",
        "employee": {
            "id": employee.id,
            "employee_id": employee.employee_id,
            "legal_name": employee.legal_name,
        },
        "results": results,
    }


@router.get("/employees/{employee_id}/lifecycle-status")
async def get_lifecycle_status(
    employee_id: int,
    db: Session = Depends(get_db),
):
    """
    查詢員工的生命週期狀態

    回傳:
    - Keycloak 帳號狀態
    - 郵件帳號狀態
    - 雲端硬碟帳號狀態 (Drive Service)
    """
    employee = db.query(Employee).filter(Employee.id == employee_id).first()

    if not employee:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=f"員工 ID {employee_id} 不存在"
        )

    # TODO: 實際查詢各系統的帳號狀態

    return {
        "employee": {
            "id": employee.id,
            "employee_id": employee.employee_id,
            "legal_name": employee.legal_name,
            "status": employee.status,
        },
        "systems": {
            "keycloak": {
                "has_account": False,
                "is_enabled": False,
                "message": "尚未整合 Keycloak API",
            },
            "email": {
                "has_account": False,
                "email_address": f"{employee.username_base}@porscheworld.tw",
                "message": "尚未整合 MailPlus API",
            },
            "drive": {
                "has_account": False,
                "drive_url": "https://drive.ease.taipei",
                "message": "Drive Service 尚未上線",
            },
        },
    }